more generics
(cherry picked from commit bb1b3f6)
changed PostProcessor to CellProcessor
(cherry picked from commit 6db7e20)
introduced set BinningContext
(cherry picked from commit 87c4fee)
rename selection cell processor to feature-selection
(cherry picked from commit a0745c6)
added CF metadata fields for start and stop time - plus tests
(cherry picked from commit 96219b4)